now that john brennan and perhaps check hagel's nominations might depend on it, a white paper is leaked to nbc news. listen to the details of what the government thinks it is allowed to do. >> it provides detail, it fleshes out some of the arguments that have been made publicly and in ways that in some instances contrast with what has been said publicly. it specifically states that imminence does not mean that the united states has to have clear evidence that a specific attack on u.s. persons or interest is underway. now, again remember, we're talking about targeted killings of americans. we're talking about making decisions based on secret intelligence, and we see in this memo that some of the definitions are a bit more eelastic and open to interpretation. >> is there a bigger power than executing your own citizens without checking with any other body. normally, you check with the judiciary, do you think these people are guilty? now our executive branch says, we're the judge jury and executioner. we all got together and decided you know what, here's some u.s. citizens we'd like to exec